NTA JEE Main 26th July 2022 Shift 2

Consider an imaginary ion $$_{22}^{48}X^{3-}$$. The nucleus contains '$$a$$' $$\%$$ more neutrons than the number of electrons in the ion. The value of '$$a$$' is ______.

A $$10 \text{ g}$$ mixture of hydrogen and helium is contained in a vessel of capacity $$0.0125 \text{ m}^3$$ at $$6 \text{ bar}$$ and $$27°C$$. The mass of helium in the mixture is ______ g. (Given: $$R = 8.3 \text{ J K}^{-1} \text{ mol}^{-1}$$)(Atomic masses of H and He are 1u and 4u, respectively)

For the reaction $$H_2F_2(g) \rightarrow H_2(g) + F_2(g)$$
$$\Delta U = -59.6 \text{ kJ mol}^{-1}$$ at $$27°C$$
The enthalpy change for the above reaction is $$-$$ ______ $$\text{kJ mol}^{-1}$$ (nearest integer) (Given: $$R = 8.314 \text{ J K}^{-1} \text{ mol}^{-1}$$)

$$20 \text{ mL}$$ of $$0.02M$$ hypo solution is used for the titration of $$10 \text{ mL}$$ of copper sulphate solution, in the presence of excess of KI using starch as an indicator. The molarity of $$Cu^{2+}$$ is found to be ______ $$\times 10^{-2} M$$ (nearest integer)
Given : $$2Cu^{2+}+4I^{-}\rightarrow Cu_{2}I_{2} + I_{2}I_{2} + 2S_{2}O_{3}^{-2} \rightarrow  2I^{-} + S_{4}O_{6}^{-2}$$

The elevation in boiling point for 1 molal solution of non-volatile solute A is $$3 \text{ K}$$. The depression in freezing point for 2 molal solution of A in the same solvent is $$6 \text{ K}$$. The ratio of $$K_b$$ and $$K_f$$ i.e., $$K_b/K_f$$ is $$1:X$$. The value of $$X$$ is ______.

The number of non-ionisable protons present in the product B obtained from the following reaction is ______
$$C_2H_5OH + PCl_3 \rightarrow C_2H_5Cl + A$$
$$A + PCl_3 \rightarrow B$$

The spin-only magnetic moment value of the compound with strongest oxidizing ability among $$MnF_4$$, $$MnF_3$$ and $$MnF_2$$ is ______ B.M. (nearest integer)

Total number of isomers (including stereoisomers) obtained on monochlorination of methylcyclohexane is ______.

A $$100 \text{ mL}$$ solution of $$CH_3CH_2MgBr$$ on treatment with methanol produces $$2.24 \text{ mL}$$ of a gas at STP. The weight of gas produced is ______ mg (nearest integer).

How many of the following drugs is/are example(s) of broad spectrum antibiotic? Ofloxacin, Penicillin G, Terpineol, Salvarsan